Lifting jack



A. PETELER 1,760,436

LIFTING JACK May 27, 1930.

Filed Sept. 29, 1926 2 Sheets-Sheet 1 fl w w @w' I INVENTOR.

A TTORNEY.

May 27, 1930.

PETELER LIFTING JACK Filed Sept. 29, 1926 2 Sheets-Sheet 2 INVENTOR.

BY I /a ATTORNEY.

Maw m ws Patented May 27, 1930 i p 1 7 436,

unir' sr'rss ADOLPH PETELER, OF FREEPORT, NEW YORK, ASSIGNOR T0 AUTO SPECiIAL'IIES MFG. 00., OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA LIFTING JACK Application filed september 29, 1926. Serial No. 138,580.

My invention relates to jacks and more matter what the position of said first extenparticularly to a lifting jack that is particusible member may be relative to the driving larly adapted for lifting of vehicles and simimember.

lar purposes. i It is also a purpose of the invention to pro- 6 It is a purpose of my invention to provide vide means "for operating the driving member a lifting jack that is very compact in con-. comprising suitable gearing and a handle clestruction and that has a large amount of tachably associated with the gearing to operlift for the height of the jack. This has been atethe same and to provide a projection or found to be particularly desirable in oonneclug on the jack that is adapted to be engaged 10 tion with. automobiles and similar vehicles by the detachable handle member whereby the using tires of large diameter which are comdetachable handle member will serve as a monly called balloon tires. This purpose is handle for the jack as a whole, said projecaccomplished by providing a jack with a. pair tion and detachable handle members being of extensible members,one o'f said members relatively so formed that there will be no 5 being extensible relative to the baseor body relative rotation between the same. of the jack and. the other being extensible Other objects andadvantages of the invenit simultaneously therewith relative to the first tion will appear as the description of the acmentioned extensible member. i companying drawings proceeds. However, It is still a further purpose of theinvention I desire to have it distinctly understood that 2 to provide a jack of the above mentioned I do not intend. to limit myself to the exact characterthat is easy to operate and is simple details shown or described, but that I intend in construction. Preferably, the jack is toinclude as part of my invention all such made of parts that have a smooth exposed obvious changes and modifications of parts portion when the jack is in extended posias would occur to a person skilled in this art tion with noprojecting screws or similar and as would fall within the scope of the parts that can be broken off on the extensible claims. members and the operating means therefor. In the drawings:

It is still another purpose of the invention Figure l is a view partly in elevation and to provide a jack or similar lifting device partly in longitudinal section of my imwith a pair of extensible members that are proved ack showing the same in extended simultaneously extensible, one relative to the position, certain parts being broken away; 1 f baseofthejackand the other relative to the Figure 2 is a similar view showing the firstextensible member andto provide means same in contracted position;

A tor simultaneously extending said members 7 Figure 3 is view partly in plan and partly 9 comprising a driving member and a member in transverse section of my improved ]LCl-Z; that is mounted relative to the driving men Fig. 4- is a view partly in elevation and her so as to rotate therewith, butwhich is partly in section of the floating member tormaxially movable relative thereto. In the ing a connection between one of the extensible form of the invention shown, the axially slidmembers and the driving means and the 9 able member is also slidably mounted relathreaded nut associated therewith; tive to a. member having screw-threaded en- Fig. 5 is a section taken on the line 55 gagement with the first extensible member, of Fig. a; and thus providing what is substantially a float- Fig. 6 1s a fragmentary elevational vlew ing member forming the driving connection of the lower end of one of the extensible between the driving memberand the second members and eta port1on of the drivlng-mem- 96 extensible member. By providing such a ber.

driving connection, there-will always be a Referring in detailto the drawings, the positive drive between the driving member jack comprises a base member 10 having a and the means having screw-threaded ensubstantially vertically extending casing porgagementwith the extensible member, no tion or housing 11 and an enlarged bottom has 9 by means of said handle.

portion 12. Said base member or casing is provided with a bottom 13 that is secured to the casing or base member by any suitable securing means 14, suitable ears being provided at 15 on the member 10 through which said securing means pass.

W'ithin said base or casing is provided a large bevel gear 16 that is provided with a recess having an annular wall portion 17 engaging with the annular fin 18 on the base member 10 as a bearing, said member 16 being mounted between the bottom 13 and in 18. A bevel pinion 19 meshes with the gear 18 and is pinned to the shaft 20 by means of the pin 21, said shaft being provided with a head 22 which is preferably square or which may be of some other shape to receive a correspondingly shaped socket member on a handie 23 so that said shaft 20 may be turned A flanged busl -n or sleeve 24, having the flange 25, screwthreadcdly engages with the screw-threaded boss 26 on the base member 10 and engages with the head 22 or the boss or hub on the pinion 19, as the case may be, to move the pinion 19 either inwardly or outwardly in order to adjust the position thereof relative to the gear 16.

A shaft 28 is secured at one end thereof to the gear 16 so as to rotate therewith by providing a squared end 29 thereon that seats in a correspondingly shaped opening in the gear 16. Said squared end is upset as shown at 30 so as to hold the gear in place on the shaft member 28, the end of the shaft 28 e11- gaging with the plate '13 so as to limit the downward movement of the gear 16 and of said shaft 28. The shaft 28 is provided with an external screw-thread 31 and an internally threaded nut 32 is mounted thereon.

The nut 32, as will be clear from Fig. 6, is provided with a plurality of projections 33 that are provided. with grooves 34 in which the spring locking ring having a split at 36 is adapted to seat. A tubular member 37 surrounds the major portion of the nut 32 and is provided with projections 38 extending endwise therefrom that interlit with the proj ections 33, said projections 38 being similarly grooved as at 39 to receive'the locking ring 35. The tubular member 37 is prdvided with an outstruck lug or key 40 that engages in the groove or kevway 41 provided in the casi ng or base member 10, the vertically extending portion 11 of the casing being provided with a laterally extending hollow rib portion 42 to provide the groove or keyway 41 within the same. It will accordingly be seen that the tubular member 37 held from rotation by the interengaging rib 40 and groove 41. As the nut 32 is keyed to the member 40, due to the interlocking projections provided on the members 37 and 32, the rotation of the threaded driving member or shaft 28 will cause the nut 32 to travel axially of the driving member or shaft 28 as the member 28 is rotated carrying tie member 37 with said nut 32. Thus, by turning the shaft 20 in the proper direction, the tubular member or extensible member 37 will be moved outwardly from the vertically extending portion 11 of the base member or casing 10, said tubular or extensible member being free to slide axially, but being held against rotation by the provision of the lug 40.

The driving member or shaft 28 is further provided with a slot 43 in the upper end thereof in which is mounted the cross bar or head 44 which serves as a key and engages in the internal grooves 45 provided on the tubular member 46 which telescopes within the member 37 so as to be housed within the same. The tubular member 46 embraces the shaft or driving member 28 and is provided with a pair of grooves 47 with which the inwardly extending lugs 48 on the nut 49 engage. The nut 49 is externally threaded as indicated at 50 and engages screw-threadedly with the internal screw-thread 51 provided on the tubular member 37. v The nut 49 is provided with projections 52 extending endwise therefrom and having the grooves 53 aligning with the grooves 54 in the projections 55 provided on the tubular member 56. A spring locking ring 67 engages with the grooves in the projections 52 and 55 when the projections are moved into interfitting relation as shown in Fig. 1, the joint form being quite similar to that between the member 37 and the nut 31.

It will be seen that as the driving member or shaft 28 is rotated, the same will rotate the tubular member or sleeve 46 which in turn will rotate the nut 49. As the nut 49 is in screw-threaded engagement with the internal threads of the tubular member 37, the nut will travel along said threads as the member 28 is rotated. It will be noted that the threads on the nut 49 are opposite in pitch to the threads on the shaft 28. Thus, the nut 49 will travel in the same direction as the tu bular or extensible member 37 and will carry with it the tubular member 56. As a result, the tubular member 56 will be extended relative to the extensible member 37, which in turn will be extended relative to the base or casing 10 as the shaft 20 is rotated by means of the handle. Mounted on the tubular member 56 is a cap 57 secured in any suitable manner, a bearing member 58 being secured thereto so as to swivel relative thereto by means of the rivet 59.

A cross pin 60 is provided for securing the key or bar 44 in position.- The end of the pin 60 projects beyond the shaft 28 into the internal groove 61 provided in the member 46. A lip or projection 62 is struck inwardly from the material of the tubular member 46 forming a stop member with which the projecting portion of the pin 60 is adapted to engage to thus prevent complete disengagement bein the normal operation of the not bear against the pin 60, but the cross member a l will engagewith the nut 32 before the pin 60 engages with the finger or lug 62 as the nut travels along the threaded shaft or tachable and which may 1 of the way place the socket in the handle and isslightly inclined so as to have the driving member 28. i

The adjustable flanged sleeve 24 is locked in position by means of the lock nut 63. The casing 10 is provided on the vertically extending tubular portion 11 thereof with the laterally extending lug or projection 64: which is of a shape to correspond with the shaft of for turning the shaft handle project slightly upwardly. It will be evident that if the socket of the handle member that is used for operating the jack is engaged with the projectionfie, an elongated handle is provided for the jack which is dey be used to move the jack undereneath an automobile or some out where it is desired to put the same to operate the jack. The ends of the grooves 47 are closed by means of the sloping end walls to thus limit the movement of the nut 49 relative to the member a6 and preventing the same from leaving the member 46 at the upper end thereof.

It will be seen from the above that a simple and compact jack is provided that is made up of number of telescoping members and that the only exposed portions of the jack in extended position are smooth portions with no projections or threads thereon and that a pair of said tubular portions are simultaneously extensible, one relative to the base and the other relative to the first mentionedextensible member, the driving means for said second extensible member comprising a tubular member that is freely slidable relative to the first membeiythus providing a positive drivin connection for the second extensible 1 a i u i c 1 1 member for all POSlll'lOllSOif the first extensible member, said drive never-interfering with theoperation of either of said members.

'lhe thread 31 is of slightly greater pitch than the thread 51, thus making the member 37 travel at a greaterlinear speed than the member 56. These threads are so proportioned that when the members reach thelr greatest extended position, the member 56 37 is telescoped with the housing 11.

Having thus described my invention what I desire to claim and secure by United States Letters Patent is: l

1. In a device of the character described, a base' member, a member extensible therefrom, a second member extensible from said first member, and means for simultaneously extending said members comprising a rotatable drivii'lgmember and means connecting Wlll be telescoped substantially the same distance within the member 3! as StllQllIlQHlbQl said driving member with said first extensible member so as to extend the same upon rotation of saiddriving member, and means comprising a member mounted to turn With said driving member and axially movable relative to the driving member and rotatable relative to said first extensible member for extending said second extensible member.

- 2. In a device of the character described, a base member, a member extensible therefrom, a second member extensible from said first member, and means for simultaneously extending said members comprising a rotatable driving member and means connecting said driving member with each of said extensible members so as to extend the same uponrotation of said driving member, said means including a member for extending said second extensible member mounted to turn with said driving member and movable axially relative thereto and relative to and independently of said second extensible member.

3. In a device of the character described, a base member a member extensible there from, a second member extensible from said first member, and means for simultaneously extending said members comprising a rotatable driving member and means connecting said driving member with each of said extensible members so as to extend the same upon rotation of said driving member, said means including a member mounted to turn with said driving member and axially movable relative thereto and movable relative to and independently of one of said extensible members. i

4. In a device of the character described, a base member, a member extensible therefrom, a second member extensible from said first member, and means for simultaneously extending said members comprising a rotat able driving member and means connecting said driving member with each of said extensible members so as to extend the same upon rotation'of said driving member, said means including a member freely slidable relative to one of said extensible members and mounted to rotate with said driving member.

5. In a device of the character described, a base member, a member extensible there from, a second member housed within and extensible from said first member, and means IOU extensible from said first member, and means for simultaneously extending said members comprising a rotatable driving member and a floating member housed within said second extensible member when the jack is collapsed and mounted to rotate with said driving member, but free to slide relative to one of said extensible members and to said driving member, said driving member being mounted within said floating member.

7. In a device of the character described, a base member, a member extensible there from, a second member extensible from said first member, and means for simultaneously extending said members comprising a rotatable driving member and means connecting said driving member with each of said extensible members so as to extend the same upon rotation of said driving member, comprising a freely slidable member mounted to rotate with said driving member, and means for limiting the outward sliding movement of said slidable member.

8. In a device of the character described, a base, a member extensible therefrom, means for holdinig said member from rotation relative to said base, a second member extensible from said first member, and means for simultaneously extending said members, said means comprising a rotatable driving member and means forming screw threaded connection with said first extensible member and including an axially movable member mounted to rotate with said driving member and a member mounted to rotate with said axially movable member and having screwthreaded engagement with said first extensible member and movable relative to said axially movable member.

9. In a device of the character described, a base, a member extensible therefrom, means for holding said member from rotation relative to said base, a second member extensible fromsaid first member, and means for simul taneously, extending said members comprising a rotatable driving member and means forming screw threaded connection with said first extensible member and including an axially movable member mounted to rotate with said driving member and a member mounted to rotate with said axially movable member and having screw-threaded engagement with said first extensible member and movable relative to said axially movable member, the thread pitch of said last mentioned threaded engagement being less than tlie't-hread pitch of the first mentioned threaded engagement. 1

10. In a device of the character described, a base member,- a member extensible therefrom, and means for extending said extensible member comprising an elongated screwthreaded member and a nut having screwthreaded engagement therewith, said nut and extensible member having interfitting grooved portions and a spring locking member engaging said grooves to secure said nut non-rotatably to said extensible member.

11. In a device of the character described, a base member, a member extensible there from, a second member extensible relative to said first member and means for extending said second extensible member comprising an elongated screw-threaded member and a nut having screw-threaded engagement thcrcwith, said nut and extensible member having interfittiug grooved portions and a spring locking member engaging said grooves to secure said nut non-rotatably to said second extensible member.

12. In a jack, the combination of a housing, a rotatable bevel gear mounted in the base of said housing and having an upstanding portion, a lifting member having a work engaging surface at its top, and a connecting member substantially co-extensive in length with the lifting member and opcratively connected therewith and with the upstanding portion of the bevel gear, and a sleeve operatively associated with the lifting member and free from direct connection with the connecting member and slidably splined to the housing to cause the simultaneous projection of the lifting member and sleeve on operation of the upstanding portion, and said sleeve having an imperforate and substantially smooth exterior and constructed and arranged when the ack is in extended position to form with the housing and the lifting member, an enclosing housing for the connecting member whereby to exclude dirt from the interior of the jack.

13. In a lifting jack having a pedestal, the combination of a driving member mounted in the pedestal, a bevel gear formed and arranged at one end of the driving member and extending outwardly thereof for moving the same, a lifting member having telescopic relationship with the driving member and a second lifting member having telescopic relationship with the first lifting member, said driving member having a driving connection with the first mentioned lifting member, and said lifting members having screw threaded interconnection and arranged so that the sec- 0nd lifting member substantially encloses the driving member and is substantially positioned at one end adjacent said outwardly extending bevel gear when the jack is in collapsed position, and means for preventing rotation of said second lifting member during its longitudinal movement.

14. In a jack, the combination of a pedestal forming an enclosing housing, a rotatable upstanding threaded member mounted in said pedestal, a load carrying member having a threaded portion, an elongated member having telescopic relationship with the load carrying member, said elongated memher having operative connections with the upstanding threaded member and with the load carrying member, said elongated. memher being axially projectable with respect to load supporting member and the upstanding threaded member, and a sleeve wholly separate from the elongated member and having operative connection with the load supporting member and the said, load supporting means.

' members having a load 15. In a jack, the combination of a pedestal forming an enclosing housing, a rotatable upstanding threaded member mounted in said pedestal, a load carrying member having a threaded portion, an elongated member having telescopic relationship with the load carrying member, all portions of said load carrying member lying concentrically outside of the exterior "ails of the elongated member, said elongated member having operative connections with the upstanding threaded member and with the load carrying member, said elongated member being axially pro ectable with respect to the upstanding threaded member, and a sleeve wholly separate from the elongated member and having operative connection with the load supporting member and the base whereby on rotation of said upstanding threaded inember, said sleeve will cause the projection of said lead supporting member from said pedestal to adistance substantially equal to the height of the pedestal, the height of the elongated member and the height the load supporting member, said loadcarrying member and said sleeve having elatively smooth and imperforate outer surfaces and being constructed and arranged when in extended position to cooperate with the pedestal to form a continuous dirt-proof housing for the upstanding threaded member and the elongated member.

a 1.6. In combination, a jack having a housing and four telescoping members capable of relative projection with respect to each other, one of said members having a threaded portion upstanding in said housing and having means formed and arranged at one end thereof for rotating the. same, the second of sa1d carrying cap at its top, the third member being longitudinally movable with respect to the first and second members, and means forming a driving connection therebetween, the fourth member comprising animperforate sleeve arranged to operate independently of the third member and adapted to exclude dirt and dust from the third member when the jack is in extended position, said sleeve being splined to the housing to prevent relative rotation therebetween.

17. In combination, a jack having a housmg and four telescoping members capable of relative projection with respect to each other, one of said members having a threaded portion upstanding in said housing and having means formed and arranged at one end thereof for rotating the sa1ne,the second of said members having a load carrying cap at its top, the third member being longitudinally movable with respect to the first and second members, and operating wholly within the innermost peripheral wall portions of the second member, and means forming a driving connection therebetween, the fourth member comprising an imperforate sleeve arranged to operateindependently of the third member when the jack is in extended position, said sleeve being splined to the housing to prevent relative rotation therebetween.

'18. In combination, a jack having a housing and four telescoping members capable of relative projection with respect to each other, one of said members having a threaded portion upstanding in said housing, and having means formed and arranged at one end thereof for rotating the same, the second of said members having a load carrying cap at the top, the third member being longitudinally movable with respect to the first and second members, and means forming a driving con nection therebet-ween, the fourth member comprising an imperforate sleeve arranged to operate independently of the third member and adapted to exclude dirt and dust from the third memberwhen the jack is in extended position, said sleeve being splined to the housing to prevent relative rotation therebetween,

and said sleeve having an operative connection with one of said members to cause said sleeve to project simultaneously with the second of said members.

In witness whereof, I have scribed my name.

hereunto sub- ADOLPH PETELER. 

